Radio resource management using line of sight feedback

Abstract

Techniques are disclosed for determining, at a first wireless access point (AP), one or more radio resource management (RRM) input parameters. The one or more RRM input parameters are determined based on a line of sight (LOS) estimate between two wireless stations (STAs). A plurality of RRM values are generated based on the one or more RRM input parameters. A wireless connection is established between the first AP and a first STA using the RRM values.

We claim: 
     
       1. A method, comprising:
 determining, at a first wireless access point (AP), one or more radio resource management (RRM) input parameters, wherein the one or more RRM input parameters are determined based on a line of sight (LOS) estimate between two wireless stations (STAs), the two wireless STAs comprising the first AP and a second AP; 
 generating a plurality of RRM values based on the one or more RRM input parameters, wherein the plurality of RRM values is generated to reduce radio transmission collisions between a first basic service set (BSS) corresponding to the first AP and a second BSS corresponding to the second AP, based on the LOS estimate; and 
 establishing a wireless connection between the first AP and a first STA using the RRM values. 
 
     
     
       2. The method of  claim 1 , wherein the one or more RRM input parameters comprise an enhanced path-loss estimate relating to the two STAs. 
     
     
       3. The method of  claim 2 , wherein the enhanced path-loss estimate comprises a measured path-loss estimate modified based on the LOS estimate. 
     
     
       4. The method of  claim 3 , wherein the measured path-loss estimate is determined based on neighbor discovery protocol (NDP) frames exchanged between the first AP and the second AP. 
     
     
       5. The method of  claim 1 , further comprising:
 receiving the LOS estimate at the first AP as part of a network message comprising a LOS log likelihood ratio relating to the two STAs. 
 
     
     
       6. The method of  claim 1 , wherein the plurality of RRM values comprises at least one of a channel assignment between the first AP and the second AP or a transmission power assignment between the first AP and the second AP. 
     
     
       7. The method of  claim 1 , wherein the first STA comprises a first user device, the method further comprising:
 determining a first roaming priority for the first user device and the second AP based on a LOS estimate between the first user device and the second AP; and 
 determining a second roaming priority for the first user device and a third AP based on a LOS estimate between the first user device and the third AP. 
 
     
     
       8. The method of  claim 7 , wherein the LOS estimate between the first user device and the second AP is greater than the LOS estimate between the first user device and the third AP, and wherein the first roaming priority is higher than the second roaming priority. 
     
     
       9. The method of  claim 7 , wherein the LOS estimate between the first user device and the second AP is greater than the LOS estimate between the first user device and the third AP, wherein the first user device is estimated to be mobile, and wherein the first roaming priority and the second roaming priority are reverse-adjusted based on the LOS estimates so that the second roaming priority is higher than the first roaming priority. 
     
     
       10. The method of  claim 1 , further comprising:
 comparing a measured first path loss corresponding to the two STAs with an estimated second path loss associated with a LOS path loss model; and 
 modifying, based on the comparison of the first path loss and the second path loss, a trust level associated with the LOS estimate, wherein the RRM input parameters are determined based, at least in part, on the modified trust level. 
 
     
     
       11. A first wireless access point (AP), comprising:
 a processor; and 
 a memory storing a program, which, when executed on the processor, performs an operation, the operation comprising:
 determining, at the AP, one or more radio resource management (RRM) input parameters, wherein the one or more RRM input parameters are determined based on a line of sight (LOS) estimate between two wireless stations (STAs); 
 generating a plurality of RRM values based on the one or more RRM input parameters; 
 establishing a wireless connection between the AP and a first STA using the RRM values, wherein the first STA comprises a first user device, 
 determining a first roaming priority for the first user device and a second AP based on a LOS estimate between the first user device and the second AP; and 
 determining a second roaming priority for the first user device and a third AP based on a LOS estimate between the first user device and the third AP. 
 
 
     
     
       12. The AP of  claim 11 , wherein the one or more RRM input parameters comprise an enhanced path-loss estimate relating to the two STAs. 
     
     
       13. The AP of  claim 12 , wherein the enhanced path-loss estimate comprises a measured path-loss estimate modified based on the LOS estimate, wherein the two STAs comprise the first AP and a second AP, and wherein the measured path-loss estimate is determined based on neighbor discovery protocol (NDP) frames exchanged between the first AP and the second AP. 
     
     
       14. The AP of  claim 11 , wherein the two STAs comprise the first AP and a second AP, and wherein the plurality of RRM values is generated to reduce radio transmission collisions between a first basic service set (BSS) corresponding to the first AP and a second BSS corresponding to the second AP, based on the LOS estimate. 
     
     
       15. The AP of  claim 11 ,
 wherein the LOS estimate between the first user device and the second AP is greater than the LOS estimate between the first user device and the third AP, wherein the first user device is estimated to be mobile, and wherein the first roaming priority and the second roaming priority are reverse-adjusted based on the LOS estimates so that the second roaming priority is higher than the first roaming priority. 
 
     
     
       16. A non-transitory computer program product comprising:
 a non-transitory computer-readable storage medium having computer-readable program code embodied therewith, the computer-readable program code executable by one or more computer processors to perform an operation, the operation comprising:
 determining, at a first wireless access point (AP), one or more radio resource management (RRM) input parameters, wherein the one or more RRM input parameters are determined based on a line of sight (LOS) estimate between two wireless stations (STAs); 
 comparing a measured first path loss corresponding to the two STAs with an estimated second path loss associated with a LOS path loss model; 
 modifying, based on the comparison of the first path loss and the second path loss, a trust level associated with the LOS estimate, wherein the RRM input parameters are determined based, at least in part, on the modified trust level; 
 generating a plurality of RRM values based on the one or more RRM input parameters; and 
 establishing a wireless connection between the first AP and a first STA using the RRM values. 
 
 
     
     
       17. The computer program product of  claim 16 , wherein the one or more RRM input parameters comprise an enhanced path-loss estimate relating to the two STAs. 
     
     
       18. The computer program product of  claim 16 , wherein the two STAs comprise the first AP and a second AP, and wherein the plurality of RRM values is generated to reduce radio transmission collisions between a first basic service set (BSS) corresponding to the first AP and a second BSS corresponding to the second AP, based on the LOS estimate. 
     
     
       19. The computer program product of  claim 16 , wherein the first STA comprises a first user device, the operation further comprising:
 determining a first roaming priority for the first user device and a second AP based on a LOS estimate between the first user device and the second AP; and 
 determining a second roaming priority for the first user device and a third AP based on a LOS estimate between the first user device and the third AP, 
 wherein the LOS estimate between the first user device and the second AP is greater than the LOS estimate between the first user device and the third AP, wherein the first user device is estimated to be mobile, and wherein the first roaming priority and the second roaming priority are reverse-adjusted based on the LOS estimates so that the second roaming priority is higher than the first roaming priority.